Pipe-joint.



PATENTED MAY 14, 1907 A. M. SAUNDERS.

PIPE JOINT. APYLIOATION FILED Juuze. 1906.

INVENTOR nrrnn sgrnirns- PATENT" orrrcii.

AUGUl'srUsM. SAUNDERS, OF- McKEESPORT, PENNSYLVANIA, ASSIGNOR in j NATIONAL TUBE comm, or rrr'rsnune, PENNSYLVANIA, A coRPo- ATIO QF W JERSEY 1 PIPE-JOINT.

naeuaeoo. Specification of Letters Patent. Patented ma 14,1907. I A umanm'auuy 26,1906. sesame. 827.193.. "l

To all whom it m y c n: 7 of the front end of the bell. The inner sur- Be it known that I, Aueus'rus M. SAUN1 face 8 ofthe gasket is tapered toward its 5 pans, of McKeesport, Allegheny county; outer end so as to make the thickness of the Pennsylvania, have invented anew and'use outer end lessthan that of its inner end 5 ful Improvement in-Pipe-Joints,.of which the The inner-ends of the gaskets4 are provided following is a full, clear' and-exact descripwith a V-shaped groove 9, a ine through the 7 tion, reference being had to the accompanya ex of the grooves being substantially paring drawings, f0 g part of thisspecificaa 161- with the longitudinal axis of the pipes tion, in WlllGh. 1 when the gaskets are assembled in place. 10- liigure 1is a longitudinal section showing. The gaskets are preferably constructed ofone the adjoining ends of two p'pes as they are l piece so as to form an annular ring, although telesc'oped together one within the other, to the gaskets may be cut from a strip of flexi- 5 form my improved pipe joint and Fig. 2 is a ble material having its cross section such as similar view showing the gasket in'its posi-" is shown in Fig. 3 and of such lengths as are tion after being expanded in place by the acequal to the circumference of the pi e 3. tion of. the flui pressure in the ipes. Fig. 3 In assembling the pipes together to orm the is a sectional'detail view on a arger scale of joints, the gasket 4 is inserted in place within 7 my improved gasket used in connection with the bell of the "pipe 2. The end of the pipe 3 the ipe joint. is then telesco ed within the bell and the eretofore in pipe joints using-a flexible gasket. As wiii be seen by reference to Fig. gasket, difiiculty has been e erienced in'in- 1, when the. pipe 3 is being telescoped Within serting the one pipe within t e other owing the bell of the pipe 2, the gasket is in the rear v to the friction between the contacting surend of the bell and by reason of the tapering faces of the pipes and of the gasket. inner portion of the gasket 4, the pipe 3 con- The object of my invention is mrovide tacts only with the inner end of the gasket 4. improved means by which the 'culties Owing to the groove 9 in the rear end of the heretofore experienced in assembling the gasket 4, this portion of the gasket is very 3O pipes where a flexible gasket is employed, are exible and is compressed very easily. By overcome and to provide means by which a tapering the gasket, the amount of its inner 3 tight joint is effected bythe action of the surface in contact with the surface of the inpressure of the fluid contained in the pipes, ner pipe 3 is lessened, and by providing the and loss by leakage is prevented. V- haped groove 9 in its rear end, the fric- 5 Another object of m invention is to protion between the inner surfaceof the gasket vide an improved be end for the end of and the surface of the pipe 3 is greatly re- 35 wrought pipes b the use of which the necesduced and the pipe can be easily placed in po- I sity of the usua calked joint is avoided. v sition within the bell of the pipe 2.

In the drawings 2. and 3 represent the ends Afterthe ends of the ipes have been asof two adjoining pipes, the end of the pipe 2 sembled, in place and fluid pressure is applied being enlar ed to form a bell ofsuch size as in the pipes, this ressure forces the gas at to 4 to permit t e and of the pipe 3 to be telethe front end 0 the bell, into the position scoped within it and fo'rmin the hell of such shown in Fig. 2. The gasket by contact shape as to permit a flexib e gasket 4 to be with the converging surface of the outer 'endinserted between the surfaces of the two of the bell, is' compressed so as to form a close pi es. The bell on the pipe 2 consists of a contact between its surfaces and the meeting 45 c indrical portion 5 of larger diameter than surfaces on the pipes 2 and 3. In this way, a t e main body of the-pipe and a spherical tight jointis secured and leakage through the ortion 6. Preferablyon'e end of each pipe joints is prevented. r

is provided with a bell, the other end being The advantages of my invention will be the same size as the main body of the pipe. apparent to those skilled in the art. By the 50 The asket 4 is of peculiar cross section and use of-a taperin gasket the difficulties hereas will be seen by reference to Fig. 3, the tofore met wit 1n inserting the pipes 1n IOO tially the same contour asthe inner surface avoided. By the construction of the front outer surface 7 of the gasket 4 is of substanjoints where flexible gaskets are used are larged end, said gasket having an inwardly made o enlarged end and sha )ed groove in the rear oi the gasketthe gas 'et is l'orcedinto close contact with'the pipes and is caused to form a tight joint, and the use of the usual socket and calked joints are rendered unnecessary.

Modifications in the construction and arrangement ol' the parts'niay bemade within the scope of my invention. 'Ihe'gaskets, which are preferably made of rubber, may be i any suitable flexible material and other variations may bemade without departing from my invention.

1 claim I. A pipe joint consisting of a pipe havin an integral enlarged end with a contractei mouth, a second pi )c telescope-d within the a flexible gaslmt around the telescoped portion of the pipe within thembeveled face which is initially largely out of contact with the pipe and the enlarged end of said pipe-having ts wall inclined to act'upon tho outer side of said gasket and. bring itsinner surface into contact with the pi )e under .he action of the lluid pressure'be rind the gasket; substantially as described.

2. A pipe joint consisting of a pipe 'havin an integral enlarged end with a contracted mouth, a second pipe telescoped within the enlarged end on t substantially as described.

my hand.

enlarged end and an annular gasket ol' [lexible material around the telesc'o ed portion of the second pipe within the en arged end. of the first pipe, said gasket having a beveled inner face which is largely out of contact with the ipe while telescoping the pi )e and which is lirought into engagement with the teiescoped pipe' bv the inclined to first )ipe under the acthe fluid pressure tron of ehind the gasket;

3. A pipe joint consisting of a pipe having an integral enlarged and witha contracted mouth, a second pi )e telescoped within the enlarged end and a i exible gasket around the telescoped portion of the second pipe within the enlarged end of the iirst pipe, said gasket having a beveled inner face which is initially largely out of contact with the pipe and having a grooved rear end, the gasket being arranged to be moved endwise and compressed under the action of the fluid pressure behind the gasket and tact with the telescoped pipe; substantially as described.

Intestinlony whereof, I have hereunto set AUGUSTUS M. SAUNDERS. Witnesses: RICHARD l).

.B. FELL.

JAMES,

bring its inner face into con-- wall of the 

